Pavement Design Mid - II, November - 2014

1.The limits of aggregate crushing value for wearing courses with Bitumen construction or cement concrete pavement should be
  • < 20 %
  • < 40%
  • < 30%
  • < 50
Answer: C
2.The data related to poisson’s ratio(v) is required for the mechanistic method of pavement design. It is generally defined as the ratio of
  • Lateral stress / Axial stress
  • Lateral strain / Axial strain
  • Lateral stress / Lateral strain
  • All of the above
Answer: B
3.Toughness index (TI) is defined as the ratio of
  • PI/FI
  • (LL - FMC) / PI
  • LL - PL
  • (FMC - PL) / PI
Answer: A
4.The design of new flexible pavements in India is carried out according to the guidelines of the Indian Road Congress given in
  • IRC:37-2012
  • IRC:58-2012
  • IRC: SP: 76-2008
  • IRC: SP: 62-2004
Answer: A
5.A typical relationship recommended by the IRC of the following may be used and can be considered as the design CBR of sub-grade
  • IRC:37-2012
  • IRC:58-2012
  • IRC: SP: 76-2008
  • IRC: SP: 62-2004
Answer: B
6.The numerical difference between initial and terminal PSI is termed as loss of PSI =
  • ΔPSI = PI / LI
  • ΔPSI = PI / EI
  • ΔPSI = LI - EI
  • ΔPSI = Pi - Pt
Answer: D
7.As a guideline, spacing of contraction joints in pavements ( URCP ) may be taken as 4.5 m when the thickness of the pavement is up to
  • 25 to 35 cm
  • 25 cm
  • 20 cm
  • 35 cm
Answer: B
8.Design method of Plain Jointed Rigid Pavements for Highways are based on the guidelines provided in
  • IRC: SP: 76-2004
  • IRC:37-2008
  • IRC:58-2011
  • IRC: SP: 62-2012
Answer: C
9.Lane distribution factor for a single lane is
  • 0.75
  • 1.5
  • 1
  • 1.25
Answer: C
10.The bricks used in the construction of pavements should be hard, tough enough to resist abrasion and impact of the traffic, Crushing Strength should be greater than
  • 60 kg/cm2
  • 85 kg/cm2
  • 105 kg/cm2
  • 75 kg/cm2
Answer: A
11.The basic formula for blending of aggregates is given as ____________________.
Answer: P = Aa + Bb + Cc + Dd + ....
12.Residual Modulus is expressed as the ratio of ____________________.
Answer: MR = σd / εr
13.Specific gravity of aggregates = ____________________.
Answer: Dry Wt. Of Aggregates / Wt. Of water equivalent to the volume of Aggregates
14.Tyre Pressure = ____________________.
Answer: Wheel Load / πa2
15.The Structural Number (SN) Value = ____________________.
Answer: SN = a1D1 + a2D2m2 + a3D3m3
16.As per IRC: 15 - 2002 spacing of contraction joints in pavements ( URCP ) may be taken as 5.0 m when the thickness of the pavement is = ____________________.
Answer: Between 25 to 35 cm
17.The joints provided in the longitudinal direction are termed as ____________________.
Answer: Longitudinal Joints
18.PCA stands for ____________________.
Answer: Portland Cement Association
19.Indian Road Congress (IRC): SP : 72 - 2007 design the low volume rural roads by sidering ______________.
Answer: Design life of 10 years
20.EMC stands for ____________________.
Answer: Equilibrium Moisture content